Constructs a new Rose::HTML::Object::Message object. If a single argument is passed, it is taken as the value for the text parameter. Otherwise, PARAMS name/value pairs are expected. Any object method is a valid parameter name.

Get or set the message's text. If the message text is set to a TEXT string (rather than a Rose::HTML::Object::Message-derived OBJECT), the id is set to the value of the constant Rose::HTML::Object::Message::CUSTOM_MESSAGE.